With the help of a flow chart, show the phenomenon of biomagnification of DDT in an aquatic food chian.

Find the correct order of biomagnification of DDT in an aquatic food chain:

With the help of a flow - chart exhibit the events of eutrophication .

(a) What depletes ozone in the stratosphere? How does this affect human life? (b) Explain biomagnification of DDT in an aquatic food chain. How does it affect the bird population?

Show with the help of a flow chart only, the life cycle of malarial parasite in humans.

Recombinant DNA-techology is of great important in the field of medicine. With the help of a flow chart , show how this techonology has been used in preparing genetically engineered human insulins

(i) How and at what stage does Plasmodium enter into a human body ? (ii) With the help of a flow-chart only show the stages of asexual reproduction in the life-cycle of the parasite in the infected human. (iii) Why does the victim show symptoms of high fever ?

The range of biomagnification of DDT in an aquatic food chain, if starting from 0.003 ppb level in water may go at fish-eating bird level upto

Name the type of food chains responsible for the flow of larger fraction of energy in an aquatic and a terrestrial ecosystem respectively. Mention one difference between the two food chains.

The highest DDT concentration in aquatic food chain shall occur in